WithdrawERC20 EIP-712

const types = {
  WithdrawERC20: [
    { name: 'token', type: 'address' },
    { name: 'to', type: 'address' },
    { name: 'amount', type: 'uint256' },
    { name: 'salt', type: 'uint256' },
    { name: 'deadline', type: 'uint256' },
  ],
};

const message = {
  token: USDC_ADDRESS,
  to: destinationWallet,
  amount: BigInt('100000000'),
  salt: BigInt(`0x${randomBytes(32).toString('hex')}`),
  deadline: BigInt(Math.floor(Date.now() / 1000) + 86400),
};

const signature = await wallet.signTypedData(domain, types, message);

from eth_account import Account
import secrets, time

domain = {
    "name": "PredictStreetVault",
    "version": "1",
    "chainId": 99999,
    "verifyingContract": vault_address,
}
types = {
    "EIP712Domain": [
        {"name": "name", "type": "string"},
        {"name": "version", "type": "string"},
        {"name": "chainId", "type": "uint256"},
        {"name": "verifyingContract", "type": "address"},
    ],
    "WithdrawERC20": [
        {"name": "token", "type": "address"},
        {"name": "to", "type": "address"},
        {"name": "amount", "type": "uint256"},
        {"name": "salt", "type": "uint256"},
        {"name": "deadline", "type": "uint256"},
    ],
}
message = {
    "token": usdc_address,
    "to": destination,
    "amount": 100_000_000,
    "salt": int.from_bytes(secrets.token_bytes(32), "big"),
    "deadline": int(time.time()) + 86400,
}
signed = Account.sign_typed_data(
    private_key,
    {"domain": domain, "primaryType": "WithdrawERC20", "types": types, "message": message},
)
signature = signed.signature.hex()